74440-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74440-71-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,4,4 and 0 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 74440-71:
(7*7)+(6*4)+(5*4)+(4*4)+(3*0)+(2*7)+(1*1)=124
124 % 10 = 4
So 74440-71-4 is a valid CAS Registry Number.